Nepenthes peltata appears to be most closely allied to the Palawan endemics N. attenboroughii, N. deaniana, N. mantalingajanensis, and N. mira.
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It has been speculated that the species may produce aerial pitchers only in deep shade or if provided with sufficient vegetation to support a climbing stem, as is the case with the closely related N. deaniana and N. mira.
Nepenthes clipeata | Nepenthes bokorensis | Nepenthes | Nepenthes rajah | Nepenthes mantalingajanensis | Nepenthes klossii | Nepenthes faizaliana | Nepenthes epiphytica | Nepenthes abgracilis | Nepenthes rigidifolia | Nepenthes mira | Nepenthes khasiana | Nepenthes kerrii | Nepenthes deaniana | Nepenthes cid | Nepenthes aristolochioides | Nepenthes viridis | Nepenthes ovata | Nepenthes mirabilis | Nepenthes spathulata | Nepenthes rhombicaulis | Nepenthes pitopangii | Nepenthes × kinabaluensis | Nepenthes holdenii | Nepenthes × harryana | Nepenthes dubia | Nepenthes burbidgeae | Nepenthes bellii | A skeletal revision of ''Nepenthes'' (Nepenthaceae) | ''Nepenthes smilesii'' from Kirirom National Park |